"A series of panoramic photographs taken during the Great Depression is offering a new view of ecological change across the Pacific Northwest, including the dramatic retreat of glaciers on the region’s most iconic peak."

"As the camera passed through the bottom of the hole, it showed the underside of the ice adorned with a glittering layer of flat ice crystals—like a jumble of snowflakes—evidence that in this particular place, sea water is actually freezing onto the base of the ice instead of melting it."

"A recent study on polar bears in the Arctic Ocean’s Beaufort Sea came to a disheartening conclusion: Shrinking sea ice, caused by global warming, is forcing the lumbering predators to wander and swim farther to hunt the seals on which their bodies depend."

"The results provide an indication of how climate variability changed across most of the Southern Hemisphere—and perhaps most of the globe—as the Northern Hemisphere ice sheets receded at the end of the ice age."

"The atmosphere over the Arctic is highly sensitive to air pollution and inversions much like Utah’s, scientists have discovered in a study that could help them understand why global warming is so much worse in one of the coldest places on Earth."

"A recent proposal. . . aims to avert potential catastrophe by turning to geoengineering through the construction of massive underwater walls, called sills, which would be built where glaciers meet the ocean in Antarctica and Greenland."

"What the scientists found is that five of the bears lost weight and four of them lost 2.9 to 5.5 pounds (1.3 to 2.5 kilograms) per day. The average polar bear studied weighed about 386 pounds (175 kilograms). One bear lost 51 pounds (23 kilograms) in just nine days."

"The first step for building any ice rink or track is to purify the water to remove dissolved solids like salts and minerals. Such impurities don’t fit in the regular hexagonal structure of ice that forms as water freezes."

"Antarctica's Ross Ice Shelf is the world's largest floating slab of ice: it's about the size of Spain, and nearly a kilometer thick. The ocean beneath, roughly the volume of the North Sea, is one of the most important but least understood parts of the climate system."

"The Pentagon is required to prepare a report for Congress in coming months that would lay out which military sites are vulnerable to "rising sea tides, increased flooding, drought, desertification, wildfires, thawing permafrost.""

"Jan Lieser, a marine glaciologist from Australia's Antarctic Climate and Ecosystems Co-operative Research Centre, said the storm would most likely redistribute the sea ice, and could have implications for any shipping in the region."